An issue was discovered in GitLab Community and Enterprise Edition 12.0 through 12.2.1. Non-members were able to comment on merge requests despite the repository being set to allow only project members to do so.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gitlab | Gitlab | 12.0.0 (including) | 12.0.8 (excluding) |
| Gitlab | Gitlab | 12.1.0 (including) | 12.1.8 (excluding) |
| Gitlab | Gitlab | 12.2.0 (including) | 12.2.3 (excluding) |